Direct current relay

Abstract

A DC relay is disclosed. According to an aspect of the present disclosure, the DC relay includes a main contact part that is electrically connected to an external power source or an external load; a sub contact part that is electrically connected to an external control power source and receives a control signal or current for controlling an operation of the main contact part; and an arc chamber having a space in which the main contact part and the sub contact part are accommodated, wherein the main contact part comprises a plurality of fixed contactors disposed to be spaced apart from each other along one direction inside the arc chamber, and the sub contact part comprises a plurality of sub connectors disposed to be spaced apart from the plurality of fixed contactors.

1 . A direct current (DC) relay, comprising:
 a main contact part that is electrically connected to an external power source or an external load;   a sub contact part that is electrically connected to an external control power source and receives a control signal or current for controlling an operation of the main contact part; and   an arc chamber having a space in which the main contact part and the sub contact part are accommodated;   wherein the main contact part comprises a plurality of fixed contactors disposed to be spaced apart from each other along one direction inside the arc chamber, and   wherein the sub contact part comprises a plurality of sub connectors disposed to be spaced apart from the plurality of fixed contactors.   
     
     
         2 . The DC relay of  claim 1 , wherein the plurality of fixed contactors are located adjacent to the center of the space of the arc chamber, and
 wherein the plurality of sub connectors are disposed to be spaced apart from each other along the other direction, respectively adjacent to a pair of corners disposed to face each other with the fixed contactors therebetween among the corners of the space.   
     
     
         3 . The DC relay of  claim 1 , wherein the arc chamber comprises:
 one pair of walls that are disposed to face each other with the space interposed therebetween, and   the other pair of walls that are each continuous with the pair of walls and are disposed to face each other with the space interposed therebetween;   wherein the plurality of sub connectors are each located in portions facing each other with the space interposed therebetween among portions in which the pair of walls and the other pair of walls are continuous with each other.   
     
     
         4 . The DC relay of  claim 1 , wherein the plurality of sub connectors are disposed to be spaced apart from each other with the plurality of fixed contacts interposed therebetween along the other direction forming a predetermined angle with the one direction. 
     
     
         5 . The DC relay of  claim 4 , wherein the one direction and the other direction are orthogonal. 
     
     
         6 . The DC relay of  claim 1 , wherein a cross-section of the arc chamber is formed in a rectangular shape having two diagonal lines intersecting each other, and
 Wherein the plurality of fixed contactors are disposed to be spaced apart from each other along one of the two diagonal lines of the arc chamber, and   Wherein the plurality of sub connectors are disposed to be spaced apart from each other along the other of the two diagonal lines of the arc chamber.   
     
     
         7 . The DC relay of  claim 6 , wherein an extension length of the other of the two diagonal lines of the arc chamber is longer than an extension length of the one of the two diagonal lines of the arc chamber. 
     
     
         8 . The DC relay of  claim 1 , comprising:
 a core part that is provided to be lifted up and down and is electrically connected to the sub contact part to form a magnetic field according to the applied control signal or current,   wherein the core part comprises:   a coil generating the magnetic field;   a stationary core that is located adjacent to the main contact part and is magnetized by the generated magnetic field; and   a movable core that is coupled to the movable contactor of the main contact part and is provided to be lifted up and down with respect to the magnetized stationary core.   
     
     
         9 . The DC relay of  claim 8 , wherein the plurality of sub connectors are disposed to be spaced apart from the movable contactor.